[PATCH linux-kselftest/test v2] apparmor: add AppArmor KUnit tests for policy unpack
Brendan Higgins
brendanhiggins at google.com
Wed Nov 6 00:43:29 UTC 2019
From: Mike Salvatore <mike.salvatore at canonical.com>
Add KUnit tests to test AppArmor unpacking of userspace policies.
AppArmor uses a serialized binary format for loading policies. To find
policy format documentation see
Documentation/admin-guide/LSM/apparmor.rst.
In order to write the tests against the policy unpacking code, some
static functions needed to be exposed for testing purposes. One of the
goals of this patch is to establish a pattern for which testing these
kinds of functions should be done in the future.
Signed-off-by: Brendan Higgins <brendanhiggins at google.com>
Signed-off-by: Mike Salvatore <mike.salvatore at canonical.com>
---
security/apparmor/Kconfig | 16 +
security/apparmor/policy_unpack.c | 4 +
security/apparmor/policy_unpack_test.c | 607 +++++++++++++++++++++++++
3 files changed, 627 insertions(+)
create mode 100644 security/apparmor/policy_unpack_test.c
diff --git a/security/apparmor/Kconfig b/security/apparmor/Kconfig
index d8b1a360a6368..78a33ccac2574 100644
--- a/security/apparmor/Kconfig
+++ b/security/apparmor/Kconfig
@@ -66,3 +66,19 @@ config SECURITY_APPARMOR_DEBUG_MESSAGES
Set the default value of the apparmor.debug kernel parameter.
When enabled, various debug messages will be logged to
the kernel message buffer.
+
+config SECURITY_APPARMOR_KUNIT_TEST
+ bool "Build KUnit tests for policy_unpack.c"
+ depends on KUNIT && SECURITY_APPARMOR
+ help
+ This builds the AppArmor KUnit tests.
+
+ KUnit tests run during boot and output the results to the debug log
+ in TAP format (http://testanything.org/). Only useful for kernel devs
+ running KUnit test harness and are not for inclusion into a
+ production build.
+
+ For more information on KUnit and unit tests in general please refer
+ to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+ If unsure, say N.
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index 8cfc9493eefc7..37c1dd3178fc0 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -1120,3 +1120,7 @@ int aa_unpack(struct aa_loaddata *udata, struct list_head *lh,
return error;
}
+
+#ifdef CONFIG_SECURITY_APPARMOR_KUNIT_TEST
+#include "policy_unpack_test.c"
+#endif /* CONFIG_SECURITY_APPARMOR_KUNIT_TEST */
diff --git a/security/apparmor/policy_unpack_test.c b/security/apparmor/policy_unpack_test.c
new file mode 100644
index 0000000000000..533137f45361c
--- /dev/null
+++ b/security/apparmor/policy_unpack_test.c
@@ -0,0 +1,607 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * KUnit tests for AppArmor's policy unpack.
+ */
+
+#include <kunit/test.h>
+
+#include "include/policy.h"
+#include "include/policy_unpack.h"
+
+#define TEST_STRING_NAME "TEST_STRING"
+#define TEST_STRING_DATA "testing"
+#define TEST_STRING_BUF_OFFSET \
+ (3 + strlen(TEST_STRING_NAME) + 1)
+
+#define TEST_U32_NAME "U32_TEST"
+#define TEST_U32_DATA ((u32)0x01020304)
+#define TEST_NAMED_U32_BUF_OFFSET \
+ (TEST_STRING_BUF_OFFSET + 3 + strlen(TEST_STRING_DATA) + 1)
+#define TEST_U32_BUF_OFFSET \
+ (TEST_NAMED_U32_BUF_OFFSET + 3 + strlen(TEST_U32_NAME) + 1)
+
+#define TEST_U16_OFFSET (TEST_U32_BUF_OFFSET + 3)
+#define TEST_U16_DATA ((u16)(TEST_U32_DATA >> 16))
+
+#define TEST_U64_NAME "U64_TEST"
+#define TEST_U64_DATA ((u64)0x0102030405060708)
+#define TEST_NAMED_U64_BUF_OFFSET (TEST_U32_BUF_OFFSET + sizeof(u32) + 1)
+#define TEST_U64_BUF_OFFSET \
+ (TEST_NAMED_U64_BUF_OFFSET + 3 + strlen(TEST_U64_NAME) + 1)
+
+#define TEST_BLOB_NAME "BLOB_TEST"
+#define TEST_BLOB_DATA "\xde\xad\x00\xbe\xef"
+#define TEST_BLOB_DATA_SIZE (ARRAY_SIZE(TEST_BLOB_DATA))
+#define TEST_NAMED_BLOB_BUF_OFFSET (TEST_U64_BUF_OFFSET + sizeof(u64) + 1)
+#define TEST_BLOB_BUF_OFFSET \
+ (TEST_NAMED_BLOB_BUF_OFFSET + 3 + strlen(TEST_BLOB_NAME) + 1)
+
+#define TEST_ARRAY_NAME "ARRAY_TEST"
+#define TEST_ARRAY_SIZE 16
+#define TEST_NAMED_ARRAY_BUF_OFFSET \
+ (TEST_BLOB_BUF_OFFSET + 5 + TEST_BLOB_DATA_SIZE)
+#define TEST_ARRAY_BUF_OFFSET \
+ (TEST_NAMED_ARRAY_BUF_OFFSET + 3 + strlen(TEST_ARRAY_NAME) + 1)
+
+struct policy_unpack_fixture {
+ struct aa_ext *e;
+ size_t e_size;
+};
+
+struct aa_ext *build_aa_ext_struct(struct policy_unpack_fixture *puf,
+ struct kunit *test, size_t buf_size)
+{
+ char *buf;
+ struct aa_ext *e;
+
+ buf = kunit_kzalloc(test, buf_size, GFP_USER);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, buf);
+
+ e = kunit_kmalloc(test, sizeof(*e), GFP_USER);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, e);
+
+ e->start = buf;
+ e->end = e->start + buf_size;
+ e->pos = e->start;
+
+ *buf = AA_NAME;
+ *(buf + 1) = strlen(TEST_STRING_NAME) + 1;
+ strcpy(buf + 3, TEST_STRING_NAME);
+
+ buf = e->start + TEST_STRING_BUF_OFFSET;
+ *buf = AA_STRING;
+ *(buf + 1) = strlen(TEST_STRING_DATA) + 1;
+ strcpy(buf + 3, TEST_STRING_DATA);
+
+ buf = e->start + TEST_NAMED_U32_BUF_OFFSET;
+ *buf = AA_NAME;
+ *(buf + 1) = strlen(TEST_U32_NAME) + 1;
+ strcpy(buf + 3, TEST_U32_NAME);
+ *(buf + 3 + strlen(TEST_U32_NAME) + 1) = AA_U32;
+ *((u32 *)(buf + 3 + strlen(TEST_U32_NAME) + 2)) = TEST_U32_DATA;
+
+ buf = e->start + TEST_NAMED_U64_BUF_OFFSET;
+ *buf = AA_NAME;
+ *(buf + 1) = strlen(TEST_U64_NAME) + 1;
+ strcpy(buf + 3, TEST_U64_NAME);
+ *(buf + 3 + strlen(TEST_U64_NAME) + 1) = AA_U64;
+ *((u64 *)(buf + 3 + strlen(TEST_U64_NAME) + 2)) = TEST_U64_DATA;
+
+ buf = e->start + TEST_NAMED_BLOB_BUF_OFFSET;
+ *buf = AA_NAME;
+ *(buf + 1) = strlen(TEST_BLOB_NAME) + 1;
+ strcpy(buf + 3, TEST_BLOB_NAME);
+ *(buf + 3 + strlen(TEST_BLOB_NAME) + 1) = AA_BLOB;
+ *(buf + 3 + strlen(TEST_BLOB_NAME) + 2) = TEST_BLOB_DATA_SIZE;
+ memcpy(buf + 3 + strlen(TEST_BLOB_NAME) + 6,
+ TEST_BLOB_DATA, TEST_BLOB_DATA_SIZE);
+
+ buf = e->start + TEST_NAMED_ARRAY_BUF_OFFSET;
+ *buf = AA_NAME;
+ *(buf + 1) = strlen(TEST_ARRAY_NAME) + 1;
+ strcpy(buf + 3, TEST_ARRAY_NAME);
+ *(buf + 3 + strlen(TEST_ARRAY_NAME) + 1) = AA_ARRAY;
+ *((u16 *)(buf + 3 + strlen(TEST_ARRAY_NAME) + 2)) = TEST_ARRAY_SIZE;
+
+ return e;
+}
+
+static int policy_unpack_test_init(struct kunit *test)
+{
+ size_t e_size = TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1;
+ struct policy_unpack_fixture *puf;
+
+ puf = kunit_kmalloc(test, sizeof(*puf), GFP_USER);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, puf);
+
+ puf->e_size = e_size;
+ puf->e = build_aa_ext_struct(puf, test, e_size);
+
+ test->priv = puf;
+ return 0;
+}
+
+static void policy_unpack_test_inbounds_when_inbounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+
+ KUNIT_EXPECT_TRUE(test, inbounds(puf->e, 0));
+ KUNIT_EXPECT_TRUE(test, inbounds(puf->e, puf->e_size / 2));
+ KUNIT_EXPECT_TRUE(test, inbounds(puf->e, puf->e_size));
+}
+
+static void policy_unpack_test_inbounds_when_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+
+ KUNIT_EXPECT_FALSE(test, inbounds(puf->e, puf->e_size + 1));
+}
+
+static void policy_unpack_test_unpack_array_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ u16 array_size;
+
+ puf->e->pos += TEST_ARRAY_BUF_OFFSET;
+
+ array_size = unpack_array(puf->e, NULL);
+
+ KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1);
+}
+
+static void policy_unpack_test_unpack_array_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_ARRAY_NAME;
+ u16 array_size;
+
+ puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET;
+
+ array_size = unpack_array(puf->e, name);
+
+ KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1);
+}
+
+static void policy_unpack_test_unpack_array_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_ARRAY_NAME;
+ u16 array_size;
+
+ puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET;
+ puf->e->end = puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16);
+
+ array_size = unpack_array(puf->e, name);
+
+ KUNIT_EXPECT_EQ(test, array_size, (u16)0);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_NAMED_ARRAY_BUF_OFFSET);
+}
+
+static void policy_unpack_test_unpack_blob_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *blob = NULL;
+ size_t size;
+
+ puf->e->pos += TEST_BLOB_BUF_OFFSET;
+ size = unpack_blob(puf->e, &blob, NULL);
+
+ KUNIT_ASSERT_EQ(test, size, TEST_BLOB_DATA_SIZE);
+ KUNIT_EXPECT_TRUE(test,
+ memcmp(blob, TEST_BLOB_DATA, TEST_BLOB_DATA_SIZE) == 0);
+}
+
+static void policy_unpack_test_unpack_blob_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *blob = NULL;
+ size_t size;
+
+ puf->e->pos += TEST_NAMED_BLOB_BUF_OFFSET;
+ size = unpack_blob(puf->e, &blob, TEST_BLOB_NAME);
+
+ KUNIT_ASSERT_EQ(test, size, TEST_BLOB_DATA_SIZE);
+ KUNIT_EXPECT_TRUE(test,
+ memcmp(blob, TEST_BLOB_DATA, TEST_BLOB_DATA_SIZE) == 0);
+}
+
+static void policy_unpack_test_unpack_blob_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *blob = NULL;
+ void *start;
+ int size;
+
+ puf->e->pos += TEST_NAMED_BLOB_BUF_OFFSET;
+ start = puf->e->pos;
+ puf->e->end = puf->e->start + TEST_BLOB_BUF_OFFSET
+ + TEST_BLOB_DATA_SIZE - 1;
+
+ size = unpack_blob(puf->e, &blob, TEST_BLOB_NAME);
+
+ KUNIT_EXPECT_EQ(test, size, 0);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start);
+}
+
+static void policy_unpack_test_unpack_str_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char *string = NULL;
+ size_t size;
+
+ puf->e->pos += TEST_STRING_BUF_OFFSET;
+ size = unpack_str(puf->e, &string, NULL);
+
+ KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
+ KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA);
+}
+
+static void policy_unpack_test_unpack_str_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char *string = NULL;
+ size_t size;
+
+ size = unpack_str(puf->e, &string, TEST_STRING_NAME);
+
+ KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
+ KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA);
+}
+
+static void policy_unpack_test_unpack_str_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char *string = NULL;
+ void *start = puf->e->pos;
+ int size;
+
+ puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET
+ + strlen(TEST_STRING_DATA) - 1;
+
+ size = unpack_str(puf->e, &string, TEST_STRING_NAME);
+
+ KUNIT_EXPECT_EQ(test, size, 0);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start);
+}
+
+static void policy_unpack_test_unpack_strdup_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *string = NULL;
+ size_t size;
+
+ puf->e->pos += TEST_STRING_BUF_OFFSET;
+ size = unpack_strdup(puf->e, &string, NULL);
+
+ KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
+ KUNIT_EXPECT_FALSE(test,
+ ((uintptr_t)puf->e->start <= (uintptr_t)string)
+ && ((uintptr_t)string <= (uintptr_t)puf->e->end));
+ KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA);
+}
+
+static void policy_unpack_test_unpack_strdup_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *string = NULL;
+ size_t size;
+
+ size = unpack_strdup(puf->e, &string, TEST_STRING_NAME);
+
+ KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
+ KUNIT_EXPECT_FALSE(test,
+ ((uintptr_t)puf->e->start <= (uintptr_t)string)
+ && ((uintptr_t)string <= (uintptr_t)puf->e->end));
+ KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA);
+}
+
+static void policy_unpack_test_unpack_strdup_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ void *start = puf->e->pos;
+ char *string = NULL;
+ int size;
+
+ puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET
+ + strlen(TEST_STRING_DATA) - 1;
+
+ size = unpack_strdup(puf->e, &string, TEST_STRING_NAME);
+
+ KUNIT_EXPECT_EQ(test, size, 0);
+ KUNIT_EXPECT_PTR_EQ(test, string, (char *)NULL);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start);
+}
+
+static void policy_unpack_test_unpack_nameX_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success;
+
+ puf->e->pos += TEST_U32_BUF_OFFSET;
+
+ success = unpack_nameX(puf->e, AA_U32, NULL);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U32_BUF_OFFSET + 1);
+}
+
+static void policy_unpack_test_unpack_nameX_with_wrong_code(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success;
+
+ puf->e->pos += TEST_U32_BUF_OFFSET;
+
+ success = unpack_nameX(puf->e, AA_BLOB, NULL);
+
+ KUNIT_EXPECT_FALSE(test, success);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U32_BUF_OFFSET);
+}
+
+static void policy_unpack_test_unpack_nameX_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_U32_NAME;
+ bool success;
+
+ puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
+
+ success = unpack_nameX(puf->e, AA_U32, name);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U32_BUF_OFFSET + 1);
+}
+
+static void policy_unpack_test_unpack_nameX_with_wrong_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ static const char name[] = "12345678";
+ bool success;
+
+ puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
+
+ success = unpack_nameX(puf->e, AA_U32, name);
+
+ KUNIT_EXPECT_FALSE(test, success);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_NAMED_U32_BUF_OFFSET);
+}
+
+static void policy_unpack_test_unpack_u16_chunk_basic(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *chunk = NULL;
+ size_t size;
+
+ puf->e->pos += TEST_U16_OFFSET;
+ /*
+ * WARNING: For unit testing purposes, we're pushing puf->e->end past
+ * the end of the allocated memory. Doing anything other than comparing
+ * memory addresses is dangerous.
+ */
+ puf->e->end += TEST_U16_DATA;
+
+ size = unpack_u16_chunk(puf->e, &chunk);
+
+ KUNIT_EXPECT_PTR_EQ(test, (void *)chunk,
+ puf->e->start + TEST_U16_OFFSET + 2);
+ KUNIT_EXPECT_EQ(test, size, (size_t)TEST_U16_DATA);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, (void *)(chunk + TEST_U16_DATA));
+}
+
+static void policy_unpack_test_unpack_u16_chunk_out_of_bounds_1(
+ struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *chunk = NULL;
+ size_t size;
+
+ puf->e->pos = puf->e->end - 1;
+
+ size = unpack_u16_chunk(puf->e, &chunk);
+
+ KUNIT_EXPECT_EQ(test, size, (size_t)0);
+ KUNIT_EXPECT_PTR_EQ(test, chunk, (char *)NULL);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, puf->e->end - 1);
+}
+
+static void policy_unpack_test_unpack_u16_chunk_out_of_bounds_2(
+ struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ char *chunk = NULL;
+ size_t size;
+
+ puf->e->pos += TEST_U16_OFFSET;
+ /*
+ * WARNING: For unit testing purposes, we're pushing puf->e->end past
+ * the end of the allocated memory. Doing anything other than comparing
+ * memory addresses is dangerous.
+ */
+ puf->e->end = puf->e->pos + TEST_U16_DATA - 1;
+
+ size = unpack_u16_chunk(puf->e, &chunk);
+
+ KUNIT_EXPECT_EQ(test, size, (size_t)0);
+ KUNIT_EXPECT_PTR_EQ(test, chunk, (char *)NULL);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, puf->e->start + TEST_U16_OFFSET);
+}
+
+static void policy_unpack_test_unpack_u32_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success;
+ u32 data;
+
+ puf->e->pos += TEST_U32_BUF_OFFSET;
+
+ success = unpack_u32(puf->e, &data, NULL);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_EQ(test, data, TEST_U32_DATA);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32) + 1);
+}
+
+static void policy_unpack_test_unpack_u32_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_U32_NAME;
+ bool success;
+ u32 data;
+
+ puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
+
+ success = unpack_u32(puf->e, &data, name);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_EQ(test, data, TEST_U32_DATA);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32) + 1);
+}
+
+static void policy_unpack_test_unpack_u32_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_U32_NAME;
+ bool success;
+ u32 data;
+
+ puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
+ puf->e->end = puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32);
+
+ success = unpack_u32(puf->e, &data, name);
+
+ KUNIT_EXPECT_FALSE(test, success);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_NAMED_U32_BUF_OFFSET);
+}
+
+static void policy_unpack_test_unpack_u64_with_null_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success;
+ u64 data;
+
+ puf->e->pos += TEST_U64_BUF_OFFSET;
+
+ success = unpack_u64(puf->e, &data, NULL);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_EQ(test, data, TEST_U64_DATA);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64) + 1);
+}
+
+static void policy_unpack_test_unpack_u64_with_name(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_U64_NAME;
+ bool success;
+ u64 data;
+
+ puf->e->pos += TEST_NAMED_U64_BUF_OFFSET;
+
+ success = unpack_u64(puf->e, &data, name);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_EQ(test, data, TEST_U64_DATA);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64) + 1);
+}
+
+static void policy_unpack_test_unpack_u64_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ const char name[] = TEST_U64_NAME;
+ bool success;
+ u64 data;
+
+ puf->e->pos += TEST_NAMED_U64_BUF_OFFSET;
+ puf->e->end = puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64);
+
+ success = unpack_u64(puf->e, &data, name);
+
+ KUNIT_EXPECT_FALSE(test, success);
+ KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
+ puf->e->start + TEST_NAMED_U64_BUF_OFFSET);
+}
+
+static void policy_unpack_test_unpack_X_code_match(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success = unpack_X(puf->e, AA_NAME);
+
+ KUNIT_EXPECT_TRUE(test, success);
+ KUNIT_EXPECT_TRUE(test, puf->e->pos == puf->e->start + 1);
+}
+
+static void policy_unpack_test_unpack_X_code_mismatch(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success = unpack_X(puf->e, AA_STRING);
+
+ KUNIT_EXPECT_FALSE(test, success);
+ KUNIT_EXPECT_TRUE(test, puf->e->pos == puf->e->start);
+}
+
+static void policy_unpack_test_unpack_X_out_of_bounds(struct kunit *test)
+{
+ struct policy_unpack_fixture *puf = test->priv;
+ bool success;
+
+ puf->e->pos = puf->e->end;
+ success = unpack_X(puf->e, AA_NAME);
+
+ KUNIT_EXPECT_FALSE(test, success);
+}
+
+static struct kunit_case apparmor_policy_unpack_test_cases[] = {
+ KUNIT_CASE(policy_unpack_test_inbounds_when_inbounds),
+ KUNIT_CASE(policy_unpack_test_inbounds_when_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_array_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_array_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_array_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_blob_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_blob_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_blob_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_nameX_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_nameX_with_wrong_code),
+ KUNIT_CASE(policy_unpack_test_unpack_nameX_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_nameX_with_wrong_name),
+ KUNIT_CASE(policy_unpack_test_unpack_str_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_str_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_str_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_strdup_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_strdup_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_strdup_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_u16_chunk_basic),
+ KUNIT_CASE(policy_unpack_test_unpack_u16_chunk_out_of_bounds_1),
+ KUNIT_CASE(policy_unpack_test_unpack_u16_chunk_out_of_bounds_2),
+ KUNIT_CASE(policy_unpack_test_unpack_u32_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_u32_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_u32_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_u64_with_null_name),
+ KUNIT_CASE(policy_unpack_test_unpack_u64_with_name),
+ KUNIT_CASE(policy_unpack_test_unpack_u64_out_of_bounds),
+ KUNIT_CASE(policy_unpack_test_unpack_X_code_match),
+ KUNIT_CASE(policy_unpack_test_unpack_X_code_mismatch),
+ KUNIT_CASE(policy_unpack_test_unpack_X_out_of_bounds),
+ {},
+};
+
+static struct kunit_suite apparmor_policy_unpack_test_module = {
+ .name = "apparmor_policy_unpack",
+ .init = policy_unpack_test_init,
+ .test_cases = apparmor_policy_unpack_test_cases,
+};
+
+kunit_test_suite(apparmor_policy_unpack_test_module);
--
2.24.0.rc1.363.gb1bccd3e3d-goog
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